Method of making tool-blanks



No. 622,269. I Patented Apr. 4, I899. E. ROGERS.

METHOD OF MAKING TOOL BLANKS.

(Application filed July 11, 1898.)

(No Model.)

NITED STATES PATENT Fries.

ETHAN ROGERS, OF BALLSTON, NEV YORK.

METHOD OF MAKING TOOL-BLANKS.

SPECIFICATION forming part of Letters Patent No. 622,269, dated April 4,1899.

Application filed July 11, 1898- Serial No. 685,593. (No model.

To all whom it ntcty concern:

Be it known that I, ETHAN Rocnns, a citizen of the United States,residing at Ballston, county of Saratoga, and State of New York, haveinvented certain new and useful Improvements in Methods of Making Tool-.

Blanks, of which the following is a specification.

The invention relates to such improvements; and it consists of the novelconstruction and combination of parts hereinafter described andsubsequently claimed.

Reference may be had to the accompanying drawings, and the letters ofreference marked thereon, which form a part of this specification.

Similar letters refer to similar parts in the several figures.

Figure 1 of the drawings is a view in side elevation of a set offorming-dies in position to receive between them one end of a metal barindicated by dotted lines. Fig. 2 is a side elevation of the metal barafter it has been formed by the dies and dies for first severingoperation. Fig. 3 is a vertical crosssection of the bar, taken on thebroken line 3 3 in Fig. 2. Fig. 4 shows in side elevation the positionof bar and dies at the end of the first severing operation. Fig. 5 is asimilar view showing the severed bar and'the relative position of thesevering-dies at the end of the second and final severing operation.Fig. 6 is a similar View of the severed bar formed into a hammer-hatchetblank. .Fig. 7 is a bottom, plan, or edge view of the blank shown inFig. 6.

The dies herein shown and described may be operated in a machine likethat shown in United States Letters Patent No. 531,221, issued to meDecember 18, 1894, for improvements in machines for making ax-polls, towhich patent reference may be had for a description thereof.

A metallic bar A is first heated and then pushed in between the membersB and B of a bending-die. The female member B is shown provided with astop B adapted to be engaged by the inserted end of the bar anddetermine the length of the successive blanks. The position of theinserted bar is indicated by the dotted lines A. These dies serve togive the bar the form shown in Fig. 2, wherein an intermediate portionis shown projected to one side of the bar, convexed on the upper andconcaved on the under side. Two operations are required to sever theblanks from the bar. A cutter O is first inserted through the convexedside at about the position indicated in Fig. 2, while the end portionsof the bar are both successively supported by the die-block C. It willbe observed that this block is concaved or cut away at 0 so that nosupport is afforded for the intermediate portion of the bar concaved onthat side, as shown in Fig. 2. The cutter, however, forces theintermediate portion downward until it reaches the out-away portion ofthe die-block, making a downwardly-offsetting projection just to theright of the knife, leaving the upper surface of the main bar to theright of theknife approximately plane, as seen at A Fig. 4. Theknife-supporting block presses out that part of the convexed side of thebar which lies to the left of the knife. The cutter is then withdrawnand the bar supported at one end only, as by the die-block O having therounded blank-forming surface 0 The cutter O is then applied to severthe blank by continuing to cut through the lower convexed side of thebar, which being unsupported by the die-block is forced a considerabledistance downwardly to one side of the bar to the stationary knife 0 asshown in Fig. 5, thereby forming a support S for the claw-piece D, whichis afterward welded onto the blank. It is onlynecessary to attach theclaw-piece, form the eye D, and bit D to form a complete hammer-axprovided with a nail-pulling claw.

The object of forming the blank ready for the claw attachment, bit, andpunching in the manner described is to produce the supporting claw-shankS and at the same time preserve the hammer-head full and square atUnless the bar is first bent so as to have its upper surface convexed,as shown in Fig. 2, the corner S would be forced down and rounded by thecutter, which would necessitate additional heavy swaging operations inexpensive dies to bring the head into the required form. The same wouldbe true of the claw-support S unless the same was drawn down along th epartially-supporting die-block 0 as before described.

plane, and afterward completing the out through the remaining side withone of the end portions of the bar unsupported, whereby the unsupportedintermediate portion on the supported end of the bar is forced aconsiderable distance to one side of that end, substantially asdescribed.

In testimony whereof I have hereunto set my hand this 2d (lay of July,1898.

ETHAN ROGERS.

\Vitnesses:

Gno. A. MOSHER, FRANK C. CURTIS.

